99069251069 has 4 divisors (see below), whose sum is σ = 99157944444. Its totient is φ = 98980557696.

The previous prime is 99069251041. The next prime is 99069251081. The reversal of 99069251069 is 96015296099.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1452372100 + 97616878969 = 38110^2 + 312437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99069251069 is a prime.

It is a super-2 number, since 2×99069251069² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99069251009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44345012 + ... + 44347245.

It is an arithmetic number, because the mean of its divisors is an integer number (24789486111).

Almost surely, 2^99069251069 is an apocalyptic number.

It is an amenable number.

99069251069 is a deficient number, since it is larger than the sum of its proper divisors (88693375).

99069251069 is a wasteful number, since it uses less digits than its factorization.

99069251069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88693374.

The product of its (nonzero) digits is 2361960, while the sum is 56.

The spelling of 99069251069 in words is "ninety-nine billion, sixty-nine million, two hundred fifty-one thousand, sixty-nine".